parse "gopher://null.host:0/B\x03u\xab\xe82O\x84\xb0\x1f\x9a\\X\x80ÛA\xb6\xf2\x91\xf2\b\xe0\xc6\xf2\x82\xfe\x8a\xaf\x84": net/url: invalid control character in URL